1. Wash the liver or kidneys and cut out any strings or white bits, then cut into slices.
2. Dip the slices in flour (cornstarch) and fry in a little hot vegetable oil.
3. At the same time, put the bacon, bread and tomatoes under a hot grill, turning the bread over to toast both sides.
4. Serve on a warmed plate with the tomatoes on the toast.